Re: [Boost-users] [Units] defining a derived dimension

Subject: Re: [Boost-users] [Units] defining a derived dimension
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2011-09-08 16:03:34

AMDG

On 09/08/2011 12:43 PM, Michael Powell wrote:
> I want to define a dimension stroke_rate, or flow_rate, for that matter. Not
> too out of the ordinary for our application. So I am starting with something
> like this for my dimensions.
> 
> #include <boost/units/derived_dimension.hpp>
> #include <boost/units/physical_dimensions/length.hpp>
> #include <boost/units/physical_dimensions/time.hpp>
> 
> typedef
> boost::units::derived_dimension<boost::units::dimensionless_type,1,boost::units::time_base_dimension,-1>::type
> stroke_rate_dimension;
> 
> <snip>
> 
> Any thoughts?
> 

Does it work better if you use

boost::units::derived_dimension<boost::units::time_base_dimension,-1>::type

?

i.e. Leave out the unnecessary dimensionless_type.

In Christ,
Steven Watanabe